| 摘要 |
PURPOSE:To arrange a developer detecting means in a device main body and simultaneously, to surely detect a developer in a developer replenishing tank by the developer detecting means. CONSTITUTION:A sponge rubber 31 having elasticity and a toner sensor 24 are disposed in the housing part 14b of a supporting frame 14. At this time, as the toner sensor 24, a piezoelectric pressure sensor or a magnetic proximity sensor is used. Moreover, on the tank part 21 of the toner replenishing tank 20, a port 21b is formed and a rubber sheet 32 shielding the port 21b is arranged. At the time of fitting the toner replenishing tank 20, the detecting surface 24a of the toner sensor 24 is inserted into the port 21b, to press the rubber sheet 32 into the tank part 21. |
